You Were Supposed to Substitute Teach, Not Take Students to the Battlefield

Rifts in space and time opened, demon beasts invaded, and the apocalypse began.

The entire world entered an era of advanced martial arts.

Before he was reborn, Su Bai was the last surviving human Martial Saint at Level Twelve. He died taking a demon beast down with him, and humanity stood on the brink of extinction.

After being reborn, he became a substitute teacher and returned to the moment the rifts first opened.

How could he save a collapsing world?

See how he leads his students and disciples back to the pinnacle in this life, fights his way into another world, and restores peace to the world!!!

This novel and its characters are entirely fictional. Any resemblance to actual people or events is purely coincidental. Please do not imitate.